Abstract:
The invention concerns a device comprising at least an electron source with field effect in a closed structure defining an internal space which contains a reducing gas for oxidising the material emitting the electron source. The invention is characterised in that the reducing gas comprises a gas of formula NxHy with x = 1 or 2 and y = 3 or 4, advantageously under pressure ranging between 10 mbar and 10 mbar. The invention also concerns methods for making such a device and appliances therefor.
Abstract translation:本发明涉及一种装置,其至少包括具有限定内部空间的闭合结构的场效应的电子源,所述内部空间包含用于氧化发射电子源的材料的还原气体。 本发明的特征在于还原气体包含式为N x H y的气体,x = 1或2,y = 3或4,有利地在10 -8 mbar和10 -1 mbar之间的压力范围内。 本发明还涉及制造这种装置和设备的方法。
Abstract:
An air-tight device having an inside pressure lower than an outside pressure, comprising a plurality of plate-shaped spacers (15) which suppress the deformation of an inside form and getter materials (9) for increasing the degree of vacuum each of which is located in a space between the two plate-shaped spacers (15), whereby gas produced inside an envelope is adsorbed immediately by the getter materials (9) and the degree of vacuum inside the envelope can be maintained satisfactorily.
Abstract:
A process is disclosed for the production of flat-screens grids coated with non-evaporable getter materials, wherein a metal sheet being as thick as the resulting grid and having at least the same surface area as the image formation zone is coated at least on one side with one or more non-evaporable getter materials and then parts of the sheet thereby coated are selectively removed. Some embodiments of grids produced with such a process are also disclosed.
Abstract:
A picture display device having an evacuated envelope (1) comprises a first wall (2) which is provided with a display screen (3), and a second wall (5), and is provided with an internal vacuum support (11) between the two walls (2, 5). The internal vacuum support (11) comprises a dielectric plate at least at the side facing the first wall (2), which plate is arranged opposite the display screen (3) and is provided with cavities (12) at the location of the pixels (4R, 4B, 4G) of the display screen (3). The internal vacuum support (11) accommodates cavities (12) which constitute a lateral system of ducts. The continuous exhaust path of the internal vacuum support (11) communicates via the exhaust cavity (25) with an exhaust connection (9).
Abstract:
A field emitter structure, comprising: a base substrate (42); a field emitter element (48) on the base substrate; a multilayer differentially etched dielectric stack (58, 60) circumscribingly surrounding the field emitter element on the base substrate; and a gate electrode (66) overlying the multilayer differentially etched dielectric stack, and in circumscribing spaced relationship to the field emitter element. Also disclosed are electron source devices, comprising an electron emitter element including a material selected from the group consisting of leaky dielectric materials, and leaky insulator materials, as well as electron source devices, comprising an electron emitter element including an insulator material doped with a tunneling electron emission enhancingly effective amount of a dopant species, and thin film triode devices.
Abstract:
According to some aspects, a cold cathode device is provided, the device comprising a substrate, a field electron emitter disposed upon the substrate and configured to emit electrons in a first direction, and a structure encapsulating the field electron emitter, thereby creating an airtight seal around the field electron emitter, at least a portion of the structure being an atomically thin membrane positioned in the first direction with respect to the field electron emitter. According to some embodiments, at least one einzel lens may be located within the structure and configured to direct electrons emitted by the field electron emitter.
Abstract:
There is provided a pipe in a solar thermal power plant, the pipe comprising an inner tube configured for carrying a heated heat transfer fluid, an outer tube surrounding the inner tube, wherein the space between the inner and outer tube is evacuated, and a getter restraint structure configured for maintaining getters in a predetermined position. The getter restraint structure is in contact with the outer tube and otherwise entirely free of contact with the inner tube and/or is in thermal isolation from the inner tube.
Abstract:
Two film materials, one of them with the structure of barium eutectic and another one with the structure of lithium solid solution, manufactured by thermal deposition. The mentioned films may give a freedom of choice of the sealing methods starting from the standard bonding processes with heating under vacuum or under inert gas to common gluing at, or around, room temperature in conditions such as: CO2 environment under the pressure of latm.
Abstract:
A field emission device in which a protectin vapor is present in an evacuated space between a field emission cathode assembly and an anode. The protectin vapor may be one or more hydrogen-containing gases suc as a gas containing M-H bonds where M may be C, Si, B, A1 or P. The protecting vapor has within the evacuated space a partial pressure greater than about 10 -8 Torr (1,33x10 -6 Pe) et 20°C.